Film-developer.



A. G. HAYDEN. FILM DEVELOPER. APPLICATION FILED mm 14, 1909.

Patented N0v.22, 1910.

svwantov 'To all whom it may concern:

Awmiin c. HAYDEN, or nnocx'ron, uassacnusm'rs.

Specification of Letters latent.

Patented Nov. 22, 1910.

Application filed May 14, 1000. sum in 405,911.'

Be it known that I, An'rnun C. HAYDEN, a citizen of the United States,residing at Brockton, in the county of Plymouth and State of-Massachusetts, have invented a new and useful FilmDeveloper, of whichthe following is a specification.

This invention has reference to improvements in developing machinesdesigned for the daylight development of photographic films without thenecessity of first removing the film from the spool upon which it iswound after being exposed in the usual manner.

In accordance with the present invention there. is provided a tankusually cylindrical in cross section and sufficiently long to'accommodate the longest film reel it is desired to insert into themachine, while provision is made for holding reels of any length withinthe capacity of the machine.

Extending axially into the machine is an arborhaving secured to orformed on one end a crank located exterior to the-machine and this arborcxtendsthrough the center of a removablecovcr designed to engage thetank and close'the corresponding end thereexclude light and of in suchmanner as to liquids introduced prevent the escape of into the tank.below the top where it is provided with a suitable bearing and beyondthis bearing is formed with a screw wise shaped to enter the usualsocket or perforation in the end of the film reel insuch manner as tohold the latter without the necessity of any other fastening means, andfurthermore, the upper end of the film reel or spool is therebysupported below the operative level of the liquids used in the tank.

Attached to the cover is a guide, usually in the form of a rod andextending down into the tank a distance greater than the center point ofany reel for which the device is adapted, and applied to this rod isa-clip capable of sliding along the rod.

The invention will be best understood from a consideration ofthefollowing detail description taken in connection with the ac-'companying drawings, -forming a part of this specification, in whichdrawings,

Figure 1 is a diametric vertical section of the improved developingtank. Fig. 2 is a section on the line A-B of Fig'l.

Referring to the-drawings there is shown a tank 1 which may be in theform of a The arbor extends a distance 7 thread or may be other-' siredandis made usually protected against the action of developing and fixingsolutions and this tank is open at one end, to which end there isadapted a cover 2 having a circumferential flange 3 on one side soshaped as to embrace the open end of the tank 1 sufficiently close toexclude light and to prevent any liquids introduced into the tank fromspilling therefromy Secu red to the inner surface of the cover 2 1s adiametric strap 4 having a central portion 5 parallel with but spacedfrom the inner face of the cover and held to the cover by the ends ofthe strap which are appropriately bent for the purpose. I

At. the center of the cover there is formed a bearing (3 and at. thecenter of the strap portion 5 there is formed a bearing 7 and these twobearings are in alinement and receive an arbor 8 extending through bothbearings and exterior to the bearing (3, which is also exterior-to thecover 2. The arbor is formedinto or has secured thereto a. crank 9 bymeans of which an operator may readily rotatethe arbor S.

The inner end of the arbor is formed with a screw-threaded extension 10preferably point-ed or conical so as to readily enter the usual socketor perforation in the end of a film reel indicated at 11, and thisthreaded end 10 is so made that it will firmly engage the reel and holdit during subsequent operations against accidental displacement.

Fast to the cover so as to project into the tank 1 when the cover isapplied, near one wall of the tank and parallel thereto is a rod 12extending into the tank a distance greater than the middle portion ofany reel 11 which may be introduced into the tank and on this rod thereis mounted a clip 13 so as to slide longitudinally on the rod on theapplication of a suitable force but which will grasp the rodsuiiiciently to hold the clip in adjusted positions because of theelasticity of the clip.

The film and film reel such as are usually employed in kodaks and otherlike photographic cameras and so need no special description.

When it is desired to develop or otherwise treatan exposed film the reelwith the film wound thereon is secured to the arbor 8 by being screwedonto the threaded end 10 thereof and this will bring the upper end ofthe reel close to the under face of the part cylinder or may beotherwise shaped as dea of metal suitably.

are assumed to be 4. The usual adhesive slip is attached to t e end ofthe film and 1s introduced between the legs of the clip 13 which issutiiciently stiff to grasp the paper and hold it against accidentalescape from the clip.

Assumin that it is desired to develo the firm a suita 1e developingfluid is intro uced into the tank 1 and then the cover 2 is a plied,this cover now carrying the film reel and film thereon with the end ofthe film continuation secured in the clip 13.- Because of the separationof the member 5 of the strap 4 from the inner face of the cover theupper end of the film reel is supported well below the level of thedeveloper. Now the-crank 9 is turned in the pro er direction to causethe unwinding of the Im from the reel and this is continued until theprovided a nipple letopening through the I cover 2 and immediatelybeneath this opening is a deflector 15 so that light rays cannot passdirectly through the opening into the interior of the tank but liquidsin the tank may be easily poured out therefrom through the nipple 14. Asuitable cap 16 is applied to the nipple 14: to close the same whendesired. By this means the film may be readily developed, the developerpoured out of the tank, washing Water poured thereinto and then pouredout and finally a suitable fixing fluid poured into the tank, to befollowed by washing water, all Without unclosing the tank or exposingthe film to actinic light, although the entire operation may be carriedon in daylight.

After the several operations or any of them have been performed, thefilm may be rolled up on the reel and the cover may then be removed,after which the reel may be unscrewed from the arbor and the end of thefilm extension be removed from the clip 13 and the film may then betreated in any manner desired.

It will be seen that the film reel is carried entirely by the arbor 8engaging the upper end only of the reel and that not only will a singletank accommodate reels of different lengths but the supporting of theupper end of the reel a considerable distance below the under face ofthe cover insures that the fiuid to which the film is treated willalways fully cover the film.

i a suitable receptacle, and an arbor ,soo

I What is claimed is il 1. In an apparatus of the class described, asuitable tank, a removable cover therefor, and an arbor carriedby thecover and extending beyond the inner face ofthe latter, said arborhaving its inner end formed to receive and suspend the spool on whichthe l film is carried in the camera.

In an apparatus of the class described,

a tank, a cover therefor, an arbor extending through the cover andhaving spaced bearings carried by the cover, one of the bearings beinginterior to the tank when the and sustainin a film reel or spool, and aguide carried by the cover at one side of the axis of the arbor andprovided with means for holding the free. end of the protecting lenvelop of the film. In an apparatus of the class described, a suitablereceptacle, and an arbor entering I the same and provided withsuspension r the film reel or spool upon which the lm is carried in thecamera, said pension means entering one end of the spool. 41 In anapparatus of the class described,

the same and or spool within the receptacle and constituting the solemeans for supporting said spool.

5. In an apparatus of the class described, a tank, a cover therefor, anarbor carried by the cover and provided with a bearing interior to thetank and spaced from the cover, said arbor being also provided with ascrew-thread extension adapted to engage and sustain a film reel orspool, and a guide member carried by the cover and provided withadjustable means for holding the outer end of the protecting extensionof the film. 6. In an apparatus of the class described, a suitable tank,a cover therefor, an arbor carried by the cover and provided with meansfor suspending a film reel and a light excluding passage thr )etherefrom without exposing the contents of the tank to light.

In testimony that I claim the foregoing as my own, I have hereto afiixedmy signature in the presence of two witnesses.

ARTHUR C. HAYDEN.

